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Flashcards in Cards for next test Deck (190)
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1

phrenology

studying bumps on the skull; can reveal a persons mental abilities and character traits

2

localization of function

the idea that various brain regions have particular functions

3

biological psychologists

the scientific study of how biology and psychology are related

4

what do nerve cells do

conduct electricity and "talk" to one another by sending chemical messages across a tiny gap that separates them

5

what does each part of the brain do

specific brain systems serve specific functions

6

what do we do with the information processed from the different brain systems

integrate the information to construct our experiences of sights, sounds, meanings, and memories, pain and passion

7

how is our adaptive brain wired

by our experience

8

biopsychosocial systems

are used to understand our behavior, culture, and community; how everything is made up of each other and helps for other things in our body

9

how do our brains relate to those of animals

depends on the animal, but for the most part they all follow the same principles

10

what is a neuron

a nerve cell that acts as a building block for our body's neural information system

11

what does a neuron consist of

a cell body and its branching fibers

12

what is a dendrite and what does it do

the neurons branching extensions; receive information and conduct toward the cell body

13

what is an axon and what does it do

the lengthy part; passes that message through its terminal branches to other neurons or to muscles or glands

14

what is the saying for dendrites and axons

dendrites listen; axons speak

15

terminal branches of axon

form junctions with other cells

16

cell body

the cell's life support center

17

what is the myelin sheath

a layer of fatty tissue; covers the axon of some neurons and helps speed neural impulses

18

what happens if the myelin sheath is damaged

multiple sclerosis results

19

what is multiple sclerosis

communication to muscles slows, with eventual loss of muscle control

20

when do neurons transmit messages

when stimulated by signals from our senses or when triggered by chemical signals from other neurons

21

what is action potential

an impulse that a neuron fires; a brief electrical charge that travels down its axon

22

how do neurons generate electricity

from chemical events

23

what is an ion

electrically charged atoms

24

what does the fluid outside an axons membrane have in regards to ions

mostly positively charged ions

25

what does a resting axons's fluid interior have in regards to ions

mostly negatively charged ions

26

what is resting potential

the positive outside/negative inside state

27

selectively permeable

when the axons surface is very selective about what it allows through its gates

28

what happens when a neuron fires

first section opens its gates, and positively charged sodium ions flood through the cell membrane

29

what happens when the first sections opens its gate and does all that fun stuff when a neuron fires

causes another exon channel to open; the process will continue

30

depolarize

what happens when the neurons fire